docs: def delete_model(self, model):
          """Delete a record."""
          try:
              if model.json is None:
                  return True
              record = Record(model.json, model=model)
              record.delete()
              db.session.commit()
          except SQLAlchemyError as e:
              if not self.handle_view_exception(e):
                  flash(_('Failed to delete record. %(error)s', error=str(e)),
                        category='error')
              db.session.rollback()
              return False
          return True